Home / 21,712.24-29,958.42-13,745.08

Finding the Fourth Proportional to 21,712.24, 29,958.42 and 13,745.08

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Solution

The fourth proportional to 21,712.24, 29,958.42 and 13,745.08 is: 18,965.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.24 : 29,958.42 = 13,745.08 : x
  2. Step 2: Convert to fraction form
    21,712.24/29,958.42 = 13,745.08/x
  3. Step 3: Cross multiply
    21,712.24x = 29,958.42 × 13,745.08
  4. Step 4: Simplify right side
    21,712.24x = 411,780,879.57
  5. Step 5: Solve for x
    x = 411,780,879.57/21,712.24
  6. Step 6: Final answer
    x = 18,965.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.